[CQ-Contest] 2nd Question

[Jim McDonald]

Bob,

I have an MM-3 and the manual, but the printing is so poor I can't read the
transistor types.  I can fax a copy of the schematic, but it's not going to
be very helpful if I can't read the original.

Jim N7US

----- Original Message -----
From: "Bob, N5RP" <N5RP at pdq.net>
To: <cq-contest at contesting.com>
Sent: Sunday, December 02, 2001 2:57 PM
Subject: [CQ-Contest] 2nd Question



OK, so everyone knew the answer to my question about who lives just inside
Pennsylvania, just past Youngstown.

So, here is question @#2; a bit harder.

KM5M came over last night with a new (old) MM3 keyer as once upon a time
manufactured by AEA under his arm, and it does not key.

One output keying jack shows no activity; the other shows dead short.

I have no schematic to look at, but on blindly opening up the enclosure, I
see two transistors mounted on the PC board that are located close to
those+ and - output keying  jacks.

Are these the keying transistors, and if so, what is the nominal type or
value of these transistors ?

I am hoping that this is all that ails the MM3, and maybe I can get it
working for him.
Bob Perring
...........................................
Amateur Radio Station  N5RP
mailto:N5RP at pdq.net
N5RP Station Page: http://freeweb.pdq.net/perring/station.html
WP2Z '99 CQWW SSB Pictures: http://freeweb.pdq.net/perring/wp2zpix.html


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